Features: Engineered with double high speed fans and a strong metal heat sink, this motor cooling systems delivers superior heat dissipation to prevent overheating during extended operate . Features a general compatibility design for seamless installation across multiple motor models, coupled with a tool easy mounting mechanism for effortless setup. Ideal for both novice hobbyists and competitive enthusiasts seeking stable thermal management solution for their high performances remote controlled toy . Perfectly suited for intense racing event , outdoor gatherings, or prolonged indoor play where consistent motor temperature control is critical. Optimized aerofoil edges secure quiet operate while maintaining robust cooling efficiency, complemented by erosion resistant construction for long term durability in diverse environments. Specifications: Component : metal Size: 2 for Option Package Includes: 1 set Double Fan Radiator note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.